|Sunset at Lake Hamana, Shizuoka|
You can start your application for an English teaching post with the companies below. I did not include the JET Program because it's more competitive and the application process is "mendoksai" (such a bother). I'm only recommending these three companies because they're already established in Japan. They also have more job opportunities than other smaller companies. You'll have more chances landing a teaching job through these companies.Their recruitment process is discussed on their websites so you'll have a clear idea about what to do, what to prepare and what to expect.